Despite being married for a year and a half, Nanase remains stuck in the role of a newlywed. Her husband, preoccupied with work, shows her little attention, leaving her lonely and unfulfilled each day. The man who once passionately pursued her during their dating days has completely changed since marriage, causing Nanase to grow increasingly confused and dissatisfied. Her pent-up desires finally reach their limit, driving her to cross the line into her first act of infidelity. Far more insatiable than her appearance suggests, this married woman, enveloped in passion, finds her heart and body liberated as she experiences a thrilling new pleasure.